Overview
Arch pain is common in people with a typical structural problem known as flat feet. Arch pain may also occur in people with fallen arches (a fallen arch is one that has collapsed due to bearing weight). Flat feet can lead to extreme stress or inflammation of the plantar fascia, possibly causing severe discomfort and leading to other foot problems. Without properly supported arches, simple movement can pull your body out of alignment and cause stress, strain and fatigue to your lower body.

Causes
Plantar fasciitis, another sports injury detailed on this website, is regularly the cause of foot arch pain or strain. This can arise due to faulty biomechanics in your feet, which alone can also provoke foot arch pains. The most prominent biomechanical difficulties are flat feet and high arches. With flat feet (or overpronation) the arches appear to be almost flattened, causing unevenness by forcing the feet roll inwards in order to maintain balance and support the body's weight. This places inordinate pressure on the plantar fascia and arches. If by contrast you have high arches (instep), the ankle can roll outwards, again causing undue strain on the arches. Too much of this strain can lead to stretching of the plantar fascia and pain in the arches. Other causes include overstretching or otherwise pressuring the arches, for example by exercising with fatigued leg muscles which leave the feet with excessive work to do. You are also particularly at risk if in your 40s or 50s and commencing an intense program of training after a long period of inactivity.

Symptoms
Symptoms of arch pain and arch strain are found in the underside of the foot, where the foot arch is. Arch pain and arch strain is actually inflammation of the tissue in the midfoot, formed by a band that stretches from the toes to the heel. The arch of the foot is needed for the proper transfer of weight from the heel to toe. When the band forming the arch of the foot or plantar fascia becomes inflamed, it becomes painful to perform simple tasks.

Diagnosis
The adult acquired flatfoot, secondary to posterior tibial tendon dysfunction, is diagnosed in a number of ways with no single test proven to be totally reliable. The most accurate diagnosis is made by a skilled clinician utilizing observation and hands on evaluation of the foot and ankle. Observation of the foot in a walking examination is most reliable. The affected foot appears more pronated and deformed compared to the unaffected foot. Muscle testing will show a strength deficit. An easy test to perform in the office is the single foot raise.

Non Surgical Treatment
Just as there are many different causes of flat feet, there are also many different treatment options. The most important aspect of treatment is determining the exact type or underlying cause of flat feet that you have. Foot and ankle specialists can determine this through thorough clinical examination and special imaging studies (e.g., x-rays, computed tomography, and/or magnetic resonance imaging). Conservative treatment is effective in the vast majority of flat foot cases, and consists of things such as insoles, splints, manipulation, or casting. Surgery is required much less frequently, and is reserved only for some of the severe types of flat foot that do not respond to conservative therapy.

Surgical Treatment
The procedure involves cutting and shifting the bone, and then performing a tendon transfer. First, the surgeon performs a calcaneal osteotomy, cutting the heel bone and shifting it into the correct position. Second, the surgeon transfers the tendon. Reroute the flexor digitorum to replace the troublesome posterior tibial tendon. Finally, the surgeon typically performs one or more fine-tuning procedures that address the patient?s specific foot deformity. Often, the surgeon will lengthen the Achilles tendon because it is common for the mispositioned foot to cause the Achilles to tighten. Occasionally, to increase the arch, the surgeon performs another osteotomy of one of the bones of the midfoot. Occasionally, to point the foot in a straightforward direction, the surgeon performs another osteotomy of the outside portion of the calcaneus.

Prevention
Arch pain occurs when the plantar fascia becomes worn down due to constant strain or excessive exercising. This may be caused by increasing your running or hiking mileage too fast, wearing inadequate footwear, lack of stretching, running on steep hills, standing on your feet for too long and abnormal anatomy such as flat foot. Stretching is an important exercise that should not be overlooked because the tightness or lack of tightness of the joints in the foot can also cause pain in the arch.

Stretching Exercises
Gastroc stretch. Stand on the edge of a step. Rise slowly on your toes. Lower yourself slowly as far as you can until you feel a stretch in your calf. Don?t roll your foot inward or outward. Hold for 1-2 seconds. Reps:10-20 (stop before you fatigue). Soleus stretch. Same as above, but start with your knee bent so that you feel a slight stretch in your calf or achilles. Maintain the angle of your knee throughout the stretch. Bicycle stretch. Lie on your side. Keeping your top leg straight, bring your knee toward your nose until you feel a slight stretch in the hamstring. Maintaining this angle at your hip, start pretending you are pedalling a bicycle with the top leg. Make sure you feel a slight stretch each time your knee is straight. Reps: 10-30 for each leg. If you feel any pops or clicks in your hip or back, try raising the top leg a little (making the thighs further apart) to eliminate the popping. Foot Intrinsic Exercises. Assisted metatarsal head raising. Sit in a chair. Find the bumps at the ball of your foot just before your big toe and just before the little toe. These are the first (big toe) and fifth (little toe) metatarsal heads. Place your second and third fingers from one hand under the first metatarsal head, and the second and third fingers from the other hand under the fifth metatarsal head. Now lay the thumbs from each hand in a diagonal across your toes so that they form a right angle meeting at the nail of the second toe. Your hands are now in position to assist your toes. Keep your toes straight, with the toe pads on the floor. Use your fingers to help raise all the metatarsal heads (the ball of your foot). Do not let your toes curl under keep them long. Now relax. Reps 7-10 for each foot. As this exercise gets easier, let your fingers do less of the work until your toes can do the exercise unassisted. This can take up to three weeks. When your strength has improved to this point, you can progress to the following three exercises, which are best done in stocking feet on a slippery floor. Active metatarsal head raising. Stand with your weight on both feet. Raise your metatarsal heads (the ball of your foot) while keeping your toes from curling under and maintaining your heel on the ground. Relax. Reps 6-7. Do one foot at a time. If you do more reps than you are ready for, you may well develop cramping in your foot. I once had a client who thought if seven reps were good, 10 were better. For good measure, she did the 10 reps 10 times in a day, and then she was unable to walk the next day from having used a set of muscles she had never exercised before. Don?t overdo it.